Tensile bond strength between tooth-colored porcelain and sandblasted zirconia framework

Abstract

When sandblasted at a pressure of 0.4MPa, the zirconia specimens developed a strong bond with the tooth-colored porcelain, regardless of the type of porcelain.

Examination of bond strength and mechanical properties of Y-TZP zirconia ceramics with different surface modifications

“…Rather, the Si of the veneering porcelain which remained on the Y-TZP surfaces that was detected was inferred to be so strongly bonded that it prevented detection of Zr in the cohesive failure area. Therefore, as has been shown previously 35) , it is concluded that the interface of the Y-TZP and the veneering porcelain is bonded strongly, and it is thought that fracture occurs in the inside of the veneering porcelain. Similarly, Fischer et al 13) indicated that the bond strength of the interface was higher than the cohesive strength of the ceramic, and it was concluded that the veneering ceramic was the weakest link.…”

“…Rougher surfaces have wider contact areas available for bonding, and also provide for an increased surface free energy in comparison to flatter or smoother surfaces 34,35) . Thus, the surface roughness value and surface free energy of Y-TZP samples were inspected in samples with varying surface modifications.…”

Influence of surface treatment on bond strength of veneering ceramics fused to zirconia

“…Nakamura et al 15) reported that bond strength between TZP and veneering ceramics increased due to a rise in the surface roughness of the TZP by sandblasting. However, another study reported that bond strength decreased 27) .…”

“…It was reported that bond strength improved with increase in surface roughness 15) . However, the influence of surface roughness on bond strength remains to be elucidated.…”

“…It has been suggested that liner porcelain influences the bond strength between TZP and veneering ceramics. The reports are conflicting, however, with some indicating an increase in bond strength 15) and some indicating a decrease 20) . Therefore, the purpose of the present study was to investigate the influence of roughness and heat treatment of the zirconia surface and use of liner porcelain on bond strength between veneering ceramics and a zirconia framework.…”